In the aluminothermic process, aluminium acts as:

1. an oxidising agent

2. a flux

3. a reducing agent

4. a solder

ऐलुमिनोतापी प्रक्रम में, ऐलुमिनियम निम्नानुसार कार्य करता है:

(1) एक ऑक्सीकारक 

(2) एक गालक 

(3) एक अपचायक 

(4) एक टाँका

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The oxidation state of Ni in Ni(CO)4 is:

1. zero

2. +4

3. +8 

4. +2

Ni(CO)4 में Ni की ऑक्सीकरण अवस्था है:

(1) शून्य 

(2) +4

(3) +8 

(4) +2

 87%
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Oxidation state of +1 for phosphorus is found in:

1. H3PO3 

2. H3PO4

3. H3PO2

4. H4P2O7

फास्फोरस के लिए +1 ऑक्सीकरण अवस्था किसमें पायी जाती है:

(1) H3PO3 

(2) H3PO4

(3) H3PO2

(4) H4P2O7

 69%
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Milliequivalents of a solute in a solution can be given by:

1. Mzeq. = M x Vin mL

2. Meq. = N x Vin mL

3. Mzeq. = massEq.mass×1000

4. both 2 and 3

किसी विलयन में एक विलेय के मिलीतुल्यांक निम्न द्वारा दिए जा सकते हैं:

(1) मिलीतुल्यांक = M x V mL में 

(2) मिलीतुल्यांक = N x VmL में 

(3) मिलीतुल्यांक =द्रव्यमानतुल्यांक द्रव्यमान×1000

(4) दोनों (b) और (c)

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KMnO4 in acid medium is always reduced to:

1. Mn4+ 

2. Mn2+ 

3. Mn6+

4. Mn

अम्लीय माध्यम में KMnOहमेशा किसमें अपचयित हो जाता है?

(1) Mn4+ 

(2) Mn2+ 

(3) Mn6+

(4) Mn

 67%
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Sn++ loses two electrons in a reaction. What will be the oxidation number of tin after the reaction

(1) + 2

(2) Zero

(3) + 4

(4) – 2

Sn++ एक अभिक्रिया में दो इलेक्ट्रॉनों को त्याग देता है। अभिक्रिया के बाद टिन की ऑक्सीकरण संख्या क्या होगी

(1) +2

(2) शून्य 

(3) +4

(4) –2

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Assertion : The ratio by volume of gaseous reactants and products is in agreement with their

                   molar ratio.

Reason : Volume of a gas is inversely proportional to the number of moles of a gas.

अभिकथन: गैसीय अभिकारकों और उत्पादों की आयतन के अनुपात में उनके मोलर अनुपात के साथ सहमति होती  है।

कारण: गैस का आयतन गैस के मोलों की संख्या के व्युत्क्रमानुपाती होता है।

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Amongst the following identify the species with an atom in (+6) oxidation state.

1. MnO4-

2. Cr(CN)3-6

3. NiF62-

4. CrO2Cl2

निम्नलिखित में से (+6) ऑक्सीकरण अवस्था वाले एक परमाणु की स्पीशीज की पहचान कीजिए।

1. MnO4-

2. Cr(CN)3-6

3. NiF62-

4. CrO2Cl2

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When NaCl is dissolved in water, the sodium ion becomes:

1. oxidised

2. reduced

3. hydrolysed

4. hydrated

जब NaCl जल में घुल जाता है, तो सोडियम आयन क्या हो जाता है?

(1) ऑक्सीकृत 

(2) अपचयित 

(3) जलअपघटित

(4) जलयोजित

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Which of the following is the strongest oxidising agent

(1) BrO3/Br2+,Eo=+1.50

(2) Fe3+/Fe2+,Eo=+0.76

(3) MnO4/Mn2+,Eo=+1.52

(4) Cr2O72/Cr3+,Eo=+1.33

निम्नलिखित में से कौन सबसे प्रबल ऑक्सीकारक है

(1) BrO3/Br2+,Eo=+1.50

(2) Fe3+/Fe2+,Eo=+0.76

(3) MnO4/Mn2+,Eo=+1.52

(4) Cr2O72/Cr3+,Eo=+1.33

 50%
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